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    Home > Biochemistry News > Biotechnology News > Longest wire-shaped double-stranded RNA virus (viral particles up to 4661.6 nm)

    Longest wire-shaped double-stranded RNA virus (viral particles up to 4661.6 nm)

    • Last Update: 2020-08-26
    • Source: Internet
    • Author: User
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    Recently, nature Communications, an international academic journal, published a new advance in the field of viruses led by Professor Wang Ping of Huayin Nong, "A dsRNA virus with filamentous viral particles".
    the study was the first to report a wire-shaped double-stranded RNA virus and by far the longest reported virus in the world (4661.6 nm).
    the virus is in an evolutionary transition from positive single-stranded RNA to double-stranded RNA virus and from "naked" to shell-wrapped viruses.
    addition, the virus has a very small genome but is wrapped in extra-long virus particles, foreshadowing a new virus assembly mechanism.
    author of this paper is Yu Hengxia, a master's student at Huahua Agricultural University's School of Plant Science and Technology, and the communication author is Associate Professor Xu Wenxing of the Institute.
    virus can infect all cell organisms including proto-animals, bacteria, ancient bacteria, invertebrates, vertebrates, algae, plants and fungi.
    in the long evolutionary process, their morphological characteristics are influenced by the environment and host, and present a variety of forms, including splints, rods, lines, etc. , some viruses are exposed.
    , many of the positive single-stranded RNA viruses are line-shaped, while the two-stranded RNA viruses are mostly spherical.
    there have been numerous reports that the double-stranded RNA virus evolved from the positive single-stranded RNA virus, but so far no wire-shaped double-stranded RNA virus has been found, which has been an unsolphed mystery in the evolution of the virus.
    , an important pathogen that infects horticultural crops such as fruit trees and tea, found a new double-stranded RNA (dsRNA) virus called Colletotrich from the spores. Cameumlliae filamentous virus 1 (CcFV-1) has an 8 dsRNA genome (the virus is the first in the world to have 8 genome fragments) and ranges in length from 990 to 2444 bp.
    CcFV-1 exposed genomic RNA is infested and is the second case of dsRNA virus with this characteristic reported internationally to date.
    CcFV-1 forms particularly long filament virus particles up to 4661.6 nm in length and 1161.6 nm longer than the longest reported line virus (3500 nm).
    In addition, on an evolutionary tree based on replication enzyme genes, CcFV-1 is classified as a transition between positive single-stranded RNA viruses and dsRNA viruses;
    CcFV-1 can significantly affect the host's pathogenic form, growth rate, pathogenicity and cell structure, and has good potential application prospects.
    discovery of the virus reveals new molecular, morphological, packaging, evolutionary and biological characteristics of the dsRNA virus, which is of great scientific significance for promoting people's deep understanding of the virus.
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